Pb (II),Cu (II) 和Cd (II) 的结合能力和共同迁移潜力在道路排水中的合物上
Xiaoli Du1,2, Xinhong Yu1, Hui Liang1
1Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China.
Environmental technology
|January 18, 2024
概括
重金属迅速结合于公路排水合物,结合能力受到度,pH值和湿酸的影响. 控制 (Pb) 对于防止水域污染至关重要.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 水的质量 水的质量
背景情况:
- 道路排水是重金属运输到水生生态系统的重要途径.
- 道路排水中的体在重金属离子的共同迁移中发挥着关键作用.
- 了解金属合物相互作用对于预测环境命运和影响至关重要.
研究的目的:
- 为了研究重金属对道路排水合物的结合能力.
- 评估影响重金属被合物吸附的因素,包括接触时间,温度,初始度,pH值,酸和多金属共存.
- 评估重金属通过道路排水合物共同迁移的潜力.
主要方法:
- 进行了批量吸附实验,以确定重金属的结合.
- 变化的参数,如接触时间,温度,初始金属离子度,pH值,酸存在,以及多金属系统.
- 吸附动力学和同热量的分析,以量化结合能力.
主要成果:
- 吸附速度很快,在30分钟内达到80%的容量.
- 结合能力随着初始金属离子度的增加而增加;Pb (II),Cu (II) 和Cd (II) 的最大容量为159.13,56.06和78.35 mg/g在298 K.
- 中性pH和酸增强了结合,而多金属条件降低了Pb (II) 和Cu (II).
结论:
- 道路排水合物具有重要的结合重金属的能力,影响它们的环境传输.
- (Pb) 与合物结合的程度很大,因此有必要采取优惠的控制措施.
- 管理道路流水中的重金属合物相互作用是减轻水污染的关键.
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